Re: [gambit-list] letrec in the interpreter

At 18:12 Uhr -0400 30.09.2005, Marc Feeley wrote:

In Scheme the above code is illegal.

Ok, I also realize that the interpreter is not trying to access an outer binding in this case, as this code shows which gives the same results as before (#!unbound in the interpreter) (I imagine it works by assignment and uses #!unbound as default value).

(define run #f) (let ((x -10)) (set! run (lambda (n) (define x (+ n 1)) (define y (+ x x)) (display y) (newline))))

(I read that R6RS will add letrec*, and specify internal define in terms of it. So I guess you will change the interpreter later to use letrec* in this case.)

Christian.